RE: Which one?
No disrespect assumed.
It appeared to me that you were comparing a lowpriced Futaba to a midpriced JR and in fact you are.
I have a 4EXA, and had a 6EXA. They are/were good value for the money.
I have a 6102 and a 8103. They are also good value for the money.
The EXA line is an almost barebones, entry level line. The JRs mentioned are far more than barebones.
The 6EXA is not actually equal to the 6102 in the functions provided.
For just one or two examples:
the model memories:
The JR provides the naming function. You type in the name of the model and that's how you identify it from then on.
The Futaba hasn't the ability to accept characters so you identify your model as "1" or "2" and it's up to you to either mark your plane or simply remember which is #1 etc.
Not a huge deal, but it does illustrate one major difference between the two radios.
The difference in the two are further illustrated by how they identify the radio's channels. The Futaba numbers them. The JR names them.
If you want to change the servo direction of the rudder, you look for the function and then look for "rudder" with the JR. You look for a number with the Futaba. I understand that Futaba identifies the channels on their more expensive sets by name.
But to further illustrate the differences between those two, look at the number of functions available. It's easier just to mention something very simple to do that.
My Futaba instruction manuals cover "Programming the 6EX Radio" with just 3-4 pages, maybe 5 depending on how you count what's on the pages.
My JR manual covers programming functions for airplanes on pages 18-44. And then covers programming helicopter functions on 45-82.
It's not actually sensible to compare the 6102 with the 6EX. One is simply a bare bones entry level radio. The other is a full featured mid-priced radio.
There is a JR Sport that is selling for $145 at HorizonHobby that is comparable to the 6EX.
There is also a Spektrum (JR) DX6 selling for $199. The Spektrum is a heck of a deal. It's the "no interference possible", latest technology available thing.
The JR6102 there sells for $199.